Process for preparing moldings or coatings

US4863666A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Willi Primas · Simbach, DE
• Max Proschkowitz · Altötting, DE
• Wilhelm Marsch · Haiming, DE

Key dates

• Filing date: May 17, 1988
• Grant date: Sep 5, 1989
• Expiry date: May 17, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing moldings or coatings by compression molding, transfer molding or injection molding from materials which contain free-radical generators and an organopolysiloxane which can be crosslinked to form organopolysiloxane elastomers, in which the free-radical generators comprise at least one free-radical generator having a half-life in benzene of 1 minute at 60.degree. C. to 149.degree. C. and at least one free-radical generator having a half-life in benzene of 1 minute at 150.degree. C. to 200.degree. C. Other materials which may be molded are those which can be crosslinked by the addition reaction of Si-bonded hydrogen with SiC-bonded vinyl groups and also contain at least one free-radical generator.